oh, I have a lovely family tree on this one.
James Dean and Raymond Massey were in East of Eden
RM and George Peppard were in How the West Was Won
GP and Martin Balsam were in Breakfast at Tiffany's
MB and Ted Knight were in Psycho
TK and Rodney Dangerfield were in Caddyshack
RD and Randy Quaid were in Back by Midnight
RQ=BM